Home / 664,848,008.20-997,272,012.30-319,623,934.60

Finding the Fourth Proportional to 664,848,008.20, 997,272,012.30 and 319,623,934.60

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Solution

The fourth proportional to 664,848,008.20, 997,272,012.30 and 319,623,934.60 is: 479,435,901.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,848,008.20 : 997,272,012.30 = 319,623,934.60 : x
  2. Step 2: Convert to fraction form
    664,848,008.20/997,272,012.30 = 319,623,934.60/x
  3. Step 3: Cross multiply
    664,848,008.20x = 997,272,012.30 × 319,623,934.60
  4. Step 4: Simplify right side
    664,848,008.20x = 318,752,004,437,785,600
  5. Step 5: Solve for x
    x = 318,752,004,437,785,600/664,848,008.20
  6. Step 6: Final answer
    x = 479,435,901.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.